Heater



(No Model.) 2 Sheets-Sheet 2;

1v1. DEWEY. HEATER.

No. 496,401. Patented May 2, 1893.

Unirse MARY DEWEY, OF CHICAGO, ILLINOIS.

, HEATER.

SPECIFICATION forming part of Letters Patent No. 496,401, dated May 2,1893.

Application filed April 8, 1892. Serial No. 428,278. No model.)

employed to heat a body of water which will radiate the heat imparted toit, and thus serve as a substitute for stove, iire place and furnaceheat.

The object of my invention is to provide anefficient heater of thisclass which is portable,

having few parts, not likely to get out of or der, and which shall becheap to construct, and can be run at small cost.

In the preferred form, my invention comprises a radiator formed by twoconcentric walls, the space between the Walls being closed at the endsto provide a chamber of large area and small transverse diameter; a basehaving a diaphragm suitably apertured; a heating agent which may be agas burner or an oil lamp placed within or below the base; and a primaryheating chamber arranged in proximity to the flame and in communicationwith the annular water space of the radiator. The flame is directed uponthis primary heating chamber and being concentrated thereon it acts uponthe small quantity of water contained and quickly heats it. The heatingof the water in this heating chamber, of course, establishes acirculation and the water may thus in a short space of time be heated toboiling point from the flame of a single gas burner or of an oil lamp.

In the accompanying drawings, Figure l is an elevation showing a gasburner applied to the heater; and Fig. 2 is a sectional elevationshowing a lamp in position.

In the drawings, A, B represent the side Walls of an annular heatingchamber C, the ends of said chamber being closed by the walls o., b, thelattern provided with a filling opening D.

E represents a base section or support for the radiator proper, saidbase section4 being preferably in the form of an open ended cy1. inderwith a diaphragm or horizontal partition F having a central aperture ftherein. The

, section E may be supported by the legs e, the

escape of the heat being through the aperture of the diaphragm.

H represents a primary heating chamber which is composed of the invertedconicalshells I, J, said chamber being in communication with theradiator chamber C through the pipes K, k. This primary heating chamfber is located in proximity to the flame, and

preferably immediately above the aperture f 6o in the diaphragm F sothat the heat of the flame is directed into the hollow base of theheating chamber formed by the lower cone. A small body of water is thussubjected to the direct action of the llame, and is thereby quicklyheated,whilethe heat escaping around the edges of said cone, iscompelled to pass along the sides thereof by means of the hood L. Theheating water flows from this heating chamber into the chamber of theradiator and gives off its heat in a short space of time.

I do not of course limit my invention t-o precise details ofconstruction. The primary heater may be of different form, `theconstruction shown being adapted to expose va small body of Water totheheat of the flame by the employment of the confining hood. Good resultsmight be obtained by making the primary heater comparatively iiat andallowing the heat to escape around its edges and pass up along the innerwalls of the radiator thus further heating them. Where the conical formis employed, the hood is useful.

The device will be effective when made from light material and of suchsize as to be readily transported but the parts of the heater may becast and used as a stationary heater or provided with casters so that itcan be moved. It will be found very convenient for use in mild weatherin living apartments, sick rooms,

green houses, and similar places where the derstood that any suitablemeans may be employed. It Will also be understood that the quantity ofWater within the radiator may vary and that, if desired, a sufcientdegree ot' heat may be employed to generate steam in the radiator.

An ordinary gage is shown applied to the radiator in Fig. l, and thebase shell is provided With a hinged door having a sight openingtherein. These features are not essential to the invention.

I claim- 1. A heater comprising in combination with a source of heat,such as a gas or oil burner, a radiator consisting of two concentricallyarranged Walls joined at their lower ends to form an annular Waterchamber and a primary heater arranged in proximity to the source of heatand communicating With the radiator chamber, substantially as described.

2. A heater comprising in combination with a source of heat, such as agas or oil burner, a metal inclosing shell arranged concentricallythereto, an annular radiator mounted upon the inclosing shell and aprimary heater arranged in proximity to the source of heat andcommunicating with the radiator chamber, substantially as described.

3. In a heater of the class described, the combination with a basehaving its upper portion formed ot an inclosing metallic shell with aperforated diaphragm therein, a primary heater arranged above theaperture of the diaphragm and an annular radiator' scribed.

MARY DEWEY. Witnesses:

C. C. LINTHICUM, N. M. BOND.

